2013 Celeb Baby Boom

Rumors first began churning that the Grammy winner was with child when, earlier this month, she walked the red carpet at the Met Gala wearing a custom-made Givenchy gown that deftly concealed her stomach, its bodice cinched high above the waist just as its intricate pattern made it difficult to discern any change in her silhouette.

Speculation then went into overdrive Tuesday after Beyonce was forced to cancel her Mrs. Carter Show performance in Antwerp, Belgium, after doctors advised her to rest "as a result of dehydration and exhaustion."

The 31-year-old recently spoke out about the possibility of giving 1-year-old Blue Ivy a sibling, telling ABC News that she "would like more children" and explaining that she thinks her daughter "needs some company."